Welded Stainless Steel Fittings

Stainless Steel Single-Side Threaded Nipples

Stainless Steel Single-Side Threaded Nipples

A stainless single-end nipple is an AISI 304 part with one male-threaded end and one plain weld end. It provides the transition from a welded stainless line or tank to a threaded device.

It is used to create gauge, sensor and drain ports on stainless tanks and manifolds. It is supplied in 12 sizes from 1/8″ to 4″.

Thread + weldtransition piece
1/8″ – 4″size range (product range)
12 sizessizes in stock
AISI 304material

Main Applications

  • Stainless tank and reactor ports
  • Pressure gauge and sensor connections
  • Drain and sampling points
  • Threaded valve connections on welded lines
  • Instrument points on CIP lines
  • Stainless manifold outlets

Technical Data

Fitting typeSingle-end nipple: one male-threaded end, one weld end
MaterialAISI 304 (product range)
Sizes1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″ (product range)
ThreadPipe thread (depending on model)
Weld endPlain, suited to TIG welding
LengthDepending on model
SurfaceUncoated stainless
Working pressureDepending on model

Material Options

PartAISI 304 stainlessAISI 316 stainlessCarbon steel
BodyAISI 304 stainless steelAISI 316 stainless steel (selected sizes)Carbon steel, grade depending on model
SurfaceUncoated stainlessUncoated stainlessBlack or oiled
Wall thicknessDepending on modelDepending on modelStandard, SCH40, SCH80
WeldingTIG / stainless electrodeTIG / stainless electrodeStick or TIG/MIG
Suitable mediaFood, drinking water, mild chemicalsChloride-containing water, seawater, aggressive chemicalsHeating water, steam, fire water

Which material? A single-end nipple should be chosen in the same grade as the stainless line or tank it is welded to; a sealant suited to stainless is used on the threaded side.

Advantages

Weld to Thread

  • Threaded device connection on a stainless line

Small Sizes

  • Instrument ports from 1/8″

12 Sizes

  • From 1/8″ to 4″

Hygienic

  • Uncoated stainless

Construction and Design Features

  • Male thread on one end
  • Plain weld end on the other
  • AISI 304 body
  • Length depending on model

Send the nipple size, length and quantity; we will confirm the suitable stainless single-end nipple from stock.

How to Choose?

  1. Measure the device threadDetermine the thread size of the sensor or valve to connect.
  2. Determine the weld locationPlan the weld point on the tank or line.
  3. Choose the lengthTake insulation or jacket thickness into account.
  4. Plan the thread sealingUse a tape or sealant that reduces galling on stainless threads.

Complementary Products

Why ORFA?

Since 1985Over 40 years of experience in supplying industrial piping equipment.
Technical ConsultancyGuidance for stainless single-end nipples on thread, length and weld point.
Delivery from StockStainless single-end nipples from 1/8″ to 4″ are shipped from stock.
Spare PartsSealing Fluids for threaded port connections from a single source.
In This Group

Other Welded Stainless Steel Fittings

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